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Longitudinal modes of quantum dots in magnetic fields

  • Ll. Serra
  • M. Pi
  • A. Emperador
  • M. Barranco
  • E. Lipparini
Conference paper

Abstract

The far infrared longitudinal spin and density responses of two-dimensional quantum dots are discussed within local spin-density functional theory. The influence of a partial spin polarization, induced by a perpendicular static magnetic field, is taken into account in the coupling of spin and density channels. As an illustrative application, the case of a dot made of 5 electrons in parabolic confinement is discussed.

PACS

73.20.Dx Electron states in low-dimensional structures 78.20.Bh Theory models and numerical simulation 

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References

  1. 1.
    W.A. de Beer: Rev. Mod. Phys. 65, 611 (1993); M. Brack: Rev. Mod. Phys. 65, 677 (1993)ADSCrossRefGoogle Scholar
  2. 2.
    Ch. Sikorski, U. Ailerkt: Phys. Rev. Lett. 62, 2164 (1989)ADSCrossRefGoogle Scholar
  3. 3.
    T. Demel, D. Heitmann, P. Grambow, K. Ploog: Phys, Rev. Lett. 64, 788 (1990)ADSCrossRefGoogle Scholar
  4. 4.
    D. Broido, K. Kempa, B. Bakshi: Phys. Rev. B 42, 11 400 (1990)Google Scholar
  5. 5.
    P.A. Maksym, T. Chakraborty: Phys. Rev. Lett. 65. 108 (1990)ADSCrossRefGoogle Scholar
  6. 6.
    V. Gudmundsson, R.R. Gerhardts: Phys. Rev. B 43, 12 098 (1991)Google Scholar
  7. 7.
    V. Shikin, S. Nazin, D. Heitmann, T. L)emel: Phys. Rev. B 43, 11 903 (1991)Google Scholar
  8. 8.
    U. Merkt: Physica B 189, 165 (1993)ADSCrossRefGoogle Scholar
  9. 9.
    W. Kohn: Phys, Rev. B 123, 1242 (1961)ADSCrossRefzbMATHGoogle Scholar
  10. 10.
    R. Strenz, U. Bockelmann, F. Hider, G. Abstreiter, G. Böhm, G. Weimann: Phys. Rev. Lett. 73, 3022 (1994)ADSCrossRefGoogle Scholar
  11. 11.
    D.J. Lockwood, P. Hawrylak, P.D. Wang, C.M. Sotomayor-Torres, A. Pinczuk, B.S. Dennis: Phys. Rev. Lett, 77, 354 (1996)ADSCrossRefGoogle Scholar
  12. 12.
    C. Schüller, K. Keller, G. Biese, E. Ulrichs, L. Rolf, D. Heitmann: Phys. Rev. Lett. 80, 2673 (1998)ADSGoogle Scholar
  13. 13.
    LI, Serra, E. Lipparini: Europhys. Lett. 40, 667 (1997)ADSCrossRefGoogle Scholar
  14. 14.
    A.R. Williams, U. von Barth: in Theory of the inhomogeneous electron gas,ed. by S. Lundqvist, N.H. March (Plenum, New York 1983) p, 231Google Scholar
  15. 15.
    A.K. Rajagopal: Phys. Rev, B 17, 2980 (1978)ADSCrossRefMathSciNetGoogle Scholar
  16. 16.
    B. Tanatar, D.M. Ceperley: Phys. Rev. B 39, 5005 (1989)ADSCrossRefGoogle Scholar
  17. 17.
    M. Koskinen, M. Manninen, S.M. Reimann: Phys. Rev. Lett. 79, 1389 (1997)ADSCrossRefGoogle Scholar
  18. 18.
    U. von Barth, L. Hediu: J. Phys. C 5, 1629 (1972)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • Ll. Serra
    • 1
  • M. Pi
    • 2
  • A. Emperador
    • 2
  • M. Barranco
    • 2
  • E. Lipparini
    • 3
  1. 1.Departament de FísicaUniversitat de les Illes BalearsPalma de MallorcaSpain
  2. 2.Departament d’Estructura i Constituents de la Matèria, Facultat de FísicaUniversitat de BarcelonaBarcelonaSpain
  3. 3.Dipartimento di FisicaUniversità di Trento and INFM Sezione di TrentoPovoItaly

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